place ring buffer pointers on their own cache line
place ring buffer pointers on their own cache line

seandepagnier/glshim,RobertoMalatesta/glshim,lunixbochs/glshim,seandepagnier/glshim,lunixbochs/glshim,RobertoMalatesta/glshim,RobertoMalatesta/glshim,lunixbochs/glshim,seandepagnier/glshim,lunixbochs/glshim,seandepagnier/glshim,RobertoMalatesta/glshim